BAK Revolver X4S Hard Roll-Up Tonneau Cover
The BAK Revolver X4S delivers best-in-class security and convenience for full-size truck owners. We built this hard rolling cover with powder-coated aluminum slats that lock into place at the cab, protecting cargo from weather and theft while maintaining a sleek low-profile.
Integrated LED cargo lighting illuminates your bed automatically when you unlock the tailgate, eliminating the need for aftermarket worklights. The dual-action tailgate seal keeps rain and dust out even during highway driving, and the entire cover rolls toward the cab in seconds when you need full bed access for oversized loads.
Our EZ-Roll track system uses sealed ball bearings for smooth one-handed operation in any weather. The X4S installs without drilling using OE-style clamps that work with most spray-in bedliners and truck bed accessories. We designed every component to withstand years of daily use, from commercial fleets to weekend adventurers.
Design & construction highlights
Aluminum Slat Construction & Weather Sealing
We manufacture every slat from marine-grade aluminum and finish it with a textured powder coat that resists scratches and corrosion. Each slat interlocks with automotive-grade EPDM rubber seals that compress when the cover locks, creating a weather-tight barrier across the entire bed length.
The dual-action tailgate seal addresses the gap most hard covers leave exposed. Our design uses a compression bulb that presses against the tailgate when closed, blocking wind-driven rain during highway speeds. In independent water tests, the X4S maintained a dry bed interior through simulated 70 mph rainstorms.
Integrated LED Cargo Lighting System
The X4S includes a built-in LED light bar mounted along the front panel that activates automatically when you unlock your tailgate. This factory-integrated solution delivers 800 lumens of white light across the bed floor, eliminating dark corners and the need for handheld flashlights during evening loading.
We wired the system to tap your truck’s existing tailgate unlock circuit, so there’s no separate switch or battery to manage. The LEDs draw minimal current and shut off when the tailgate closes, preventing battery drain. Sealed connectors protect the electrical path from moisture and road debris.
EZ-Roll Track System & Deployment Speed
Our EZ-Roll design replaces traditional sliding mechanisms with sealed ball-bearing cartridges that ride inside extruded aluminum rails. The bearings distribute the cover’s weight evenly, so opening and closing requires only light one-handed pressure from any position along the bed.
When you need full bed access, release the cab lock and roll the entire cover forward in under fifteen seconds. The slats nest together in a compact canister that sits 12 inches from the cab, leaving 85 percent of your bed floor clear for plywood sheets, appliances, or ATV loading.
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Common Questions About the Revolver X4S
No drilling is required. The X4S uses adjustable clamps that grip your truck's bed rails without penetrating the metal or bed liner.
Each clamp includes a rubberized contact pad that protects the factory paint and distributes pressure evenly. The system is designed to work with most spray-in bedliners up to 1/4 inch thick. Total installation takes about 45 minutes with standard hand tools, and removal is just as simple if you need to transfer the cover to another vehicle.
The LED light bar activates automatically when you unlock your tailgate. It taps into your truck's existing tailgate unlock circuit, so there's no separate switch or battery to manage.
The system delivers 800 lumens of white light across the bed floor and shuts off when the tailgate closes to prevent battery drain. All electrical connections use sealed weatherproof connectors that resist moisture and road debris. The LEDs are rated for 50,000 hours of operation.
Yes, the X4S is compatible with most 5th-wheel and gooseneck hitch systems. When rolled fully forward, the cover canister stops 12 inches behind the cab, leaving the front bed section clear for hitch installation.
The cover does not interfere with B&W Companion hitches, Reese Elite rails, or standard gooseneck ball mounts. You can also use the mid-bed locking positions to secure the cover in a partially open position while towing if needed.
The X4S uses rigid powder-coated aluminum slats instead of vinyl or fabric, providing physical resistance to cutting and forced entry. The slats interlock with no gaps, preventing pry bar insertion.
The rotary latch at the cab engages a steel striker plate with the same keyed cylinder as your tailgate, and stainless Torx mounting hardware deters quick removal. The entire assembly weighs 68 pounds installed, making opportunistic theft impractical. Independent testing shows the X4S withstands significantly more force than soft covers before failure.
When fully rolled toward the cab, the X4S canister occupies approximately 12 inches of bed length. This leaves roughly 85 percent of your bed floor clear for cargo.
The compact canister design allows you to load plywood sheets, appliances, motorcycles, and other oversized items without removing the cover. The entire deployment process takes under 15 seconds from locked to fully open.
Yes, the X4S is engineered for temperature extremes. The aluminum slat structure won't warp in summer heat or crack in sub-zero cold, and the powder coat resists UV fading and thermal cycling.
The sealed ball-bearing track system operates smoothly through ice and snow, with integrated drainage channels that prevent water pooling and freeze-up. We've tested the cover through temperature ranges from -40°F to 140°F without mechanical degradation. Coastal operators also report excellent corrosion resistance in salt-spray environments.
BAK Industries provides a three-year warranty covering defects in materials and workmanship. This includes the aluminum slats, track system, ball bearings, mounting hardware, and LED lighting components.
The warranty covers replacement or repair of defective parts and does not require product registration, though we recommend keeping your purchase receipt. Normal wear items like rubber seals and cosmetic damage from accidents or improper installation are excluded. Full warranty terms are included with every cover.